Buggy handle extensions???

Hi - have just purchased a buggy board to go on Maclaren buggy - this is working really well and ds loves it. However my neck and shoulders are really hurting me after pushing dss in it!! I am quite tall and have to stretch to reach the buggy handles. Anyone know if you can get handle extensions??? (have seen some US ones but nothing in the UK so far...) Or does anyone have any other ideas for solving this problem?? Would be much appreciated - have a v stiff neck / shoulders at the moment... thanks!

Well i dread to think how I would be feeling if I was 5ft tall!! But perhaps I am getting off lightly and should be grateful - my shoulder is soooo sore though - made reversing my car really tough today! They aren't the most elegant things to push around really are they....tracyk your dh sounds like mine............
Am desperate - BUMP!